- Title
- Green Synthesized Carbon Quantum Dots/Cobalt Sulfide Nanocomposite as Efficient Electrode Material for Supercapacitors
- Creator
- Arsalani, Nasser; Ghadimi, Laleh Saleh; Ahadzadeh, Iraj; Tabrizi, Amin Goljanian; Nann, Thomas
- Relation
- Energy & Fuels Vol. 35, Issue 11, p. 9635-9645
- Publisher Link
- http://dx.doi.org/10.1021/acs.energyfuels.1c00369
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2021
- Description
- In the present work, carbon quantum dots/CoS2 nanocomposite (CQDs/CoS2) was prepared through a solvent-free ball milling route followed by solvothermal treatment. The CQDs were prepared first by a green catalyst-free microwave-assisted procedure from glycerol, as a single precursor, with a quantum yield of ∼16%. Then, a ball mill–hydrothermal combination method was used to synthesize CQDs/CoS2 with edged bricklike morphology. Benefiting from advantageous features of large specific surface area (427.2 m2 g–1), unique nanostructure with high mesoporosity, and greater electronic conductivity, the as-synthesized CQDs/CoS2 nanocomposite electrode material displays a rather high specific pseudocapacitance, about 808 F g–1 at 1 A g–1 current density, a high rate capability with 83.9% capacity retention rate at 20 A g–1, and good cycling stability of 98.75% over 10 000 charge/discharge cycles at 1 A g–1. The attained results support the suitability of CQDs/CoS2 nanocomposite as a desired material for future high-performance electrochemical energy storage devices.
- Subject
- ball milling; electrodes; energy storage; morphology; nancomposites; nanocrystals
- Identifier
- http://hdl.handle.net/1959.13/1464168
- Identifier
- uon:46929
- Identifier
- ISSN:0887-0624
- Language
- eng
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